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Sludge thickening

HUBER Belt Thickener DrainBelt

Manufacturer: HUBER Technology

Country: Germany

HUBER Belt Thickener DrainBelt provides gravity thickening of conditioned sludge on a moving filter belt. Its duty is to remove free water and prepare sludge for downstream dewatering or treatment.

Sludge is distributed evenly onto the permeable belt. Filtrate drains downward through the belt, while thickened sludge moves to the discharge zone; Depending on the configuration, redistribution elements can be used to manage the sludge layer.

  • belt thickening, not press dewatering;

  • operation with pre-conditioned sludge;

  • belt width, solids loading and washing depend on configuration.

DrainBelt is distinct from B-PRESS: the thickener increases dry-solids concentration before the next stage, while the belt press forms dewatered sludge cake.

Specifications

Process typebelt thickening
Volume reductiongreater than 85 %
Typical output solidsgreater than 6 %
Polymer consumptionnormally 2-3 g/kg DS
Belt speedless than 20 m/min
Specific throughputup to 45 m³/h per m belt width